trying to teach young people, this is not like your friendly saturday afternoons with 4-year-olds to talk about guns are bad. you are standing on -- standing between people who are sometimes at this moment potentially about president obama in t to be in a gunfight. >> the young men and women throughout america, we have stood in the middle of 45 conflicts in chicago. in one, a guy shot a grandmother's window, then burned her car. he said he wasn't going to listen to anybody. as an end result, the grandmother's grandsons are still alive today. that's something we caught on the front end. >> i want to bring tracy into this. i know you know one another from some of the work for many years in chicago. >> one thing that is important about what cease-fire does is addresses the violence of young men, african-american men in particular. we know gun violence is the number one source, reason for death among that age group. we also know looking at chicago in particular that the way people are connected in the communities is important. if you look at the high crime community where tio and his colleagu